package com.example.springcloud.service.impl;

import cn.hutool.core.util.IdUtil;
import com.example.springcloud.service.PaymentService;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.cloud.commons.util.IdUtils;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author sunliang
 * @version 1.0
 * @date 2020/4/24 10:55
 */
@Service
public class PaymentServiceImpl implements PaymentService
{
    @Override
    public String paymentInfo_OK(Integer id)
    {
        return "线程池: "+Thread.currentThread().getName()+"  paymentInfo_OK,id: "+ id;
    }

    @Override
    public String paymentInfo_TimeOut(Integer id)
    {
        return "线程池: "+Thread.currentThread().getName()+"  paymentInfo_TimeOut,id: "+ id;
    }


    //------服务熔断

    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled" , value = "true"),//是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold" , value = "10"),//请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds" , value = "10000"),//时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage" , value = "60")//失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id)
    {
        if(id < 0)
        {
            throw new RuntimeException("**********id 不能为负数");
        }

        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号: " + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id)
    {
        return "id 不能为负数，请稍后再试。 id : " + id;
    }
}
